Php automatic loading method _ PHP Tutorial

Php class automatic loading method. Php class automatic loading method before PHP5, if each PHP framework needs to implement automatic loading of classes, it generally implements a traversal directory according to certain conventions, automatically load all php-compliant methods

Before PHP5, if PHP frameworks need to implement automatic class loading, they generally implement a traversal directory according to certain conventions and automatically load all classes or functions that comply with the agreed rules. Of course, PHP5's previous object-oriented support was not very good, and classes were not frequently used. Let's discuss it in detail.

Php automatic loading method

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Class inload { /** * The class is automatically loaded and does not need to be called by the developer. * * @ Param string $ class file */ Private function autoload ($ class) { If (empty ($ class )) { Throw new QException ('loading file does not exist'. $ class ); } Else { Require _ SPRING _. '/_ Core/SpringMap. php'; // framework map If (! File_exists ($ source [$ class] ['file']) { Throw new QException ('loading file does not exist'. $ class ); } Require $ source [$ class] ['file']; } } /** * Register or unregister an automatic class loading method * * For more information about this method, see Zend Framework. * * @ Param string $ class: class that provides automatic loading service * @ Param boolean $ enabled or disabled this service */ Private function registerAutoload ($ class = 'interpreter', $ enabled = true) { If (! Function_exists ('SPL _ autoload_register ')) { Throw new QException ('SPL _ autoload does not have this PHP installation '); } If ($ enabled = true) { Spl_autoload_register (array ($ class, 'autoload ')); } Else { Spl_autoload_unregister (array ($ class, 'autoload ')); } } /** * Destructor */ Public function _ destruct () { Self: registerAutoload ('interpreter', false ); }

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